CN105703844A - VOR standard signal generating method and transmitter - Google Patents
VOR standard signal generating method and transmitter Download PDFInfo
- Publication number
- CN105703844A CN105703844A CN201610137727.3A CN201610137727A CN105703844A CN 105703844 A CN105703844 A CN 105703844A CN 201610137727 A CN201610137727 A CN 201610137727A CN 105703844 A CN105703844 A CN 105703844A
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- signal
- phase signal
- phase
- variable
- reference phase
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
Abstract
The present invention relates to the aviation navigation field and discloses a VOR standard signal generating method and a transmitter. According to the technical scheme of the invention, the method comprises the steps of generating a reference phase signal and a variable phase signal, wherein the phase difference between the reference phase signal and the variable phase signal is accurate and stable; generating a sub-carrier signal; modulating the frequency of the sub-carrier signal by utilizing the reference phase signal; generating a main carrier signal; modulating the frequency of the main carrier signal by utilizing the frequency-modulated reference phase signal and the variable phase signal; and generating a VOR standard signal. In this way, the accuracy of the phase difference between the reference phase signal and the variable phase signal in the VOR standard signal is improved.
Description
Technical field
The present invention relates to aerial navigation field, particularly relate to production method and the transmitter of a kind of VOR standard signal。
Background technology
VOR (VeryHighFrequencyOmnidirectionalRadioRange, VHF Omnidirection range) standard signal basic training be for airborne VOR receiver provide a complicated radio signal, the accuracy of detection and calibrator (-ter) unit and systematic error, in order to ensure that aircraft can correctly identify and demodulate the VOR navigation signal of field emission in flight course。The signal that VOR transmitter sends contains two compositions: one is the reference phase signal of 30Hz；Another is the variable-phase signal of 30Hz。In order to distinguish the two, reference phase signal needs extra 9.96kHz subcarrier is carried out frequency modulation, then common to main carrier amplitude modulation realization transmitting。VOR receiver on aircraft just can calculate the relative bearing (magnetic north direction is 0 °) self being in beacon station (airport) according to the phase contrast of two signals received。VOR operating frequency (main carrier) scope 108MHz-117.95MHz, channel spacing 0.05MHz, and the mode that VOR signal source of the prior art adopts digital signal synthesis realizes, due to its quantization error, digital-to-analogue conversion error etc., it cannot be guaranteed that the phase contrast of two-way 30Hz frequency content is enough accurate in VOR signal, it is also difficult to evaluate efficiently and accurately。
Summary of the invention
The present invention provides production method and the transmitter of a kind of VOR standard signal, solves in prior art it cannot be guaranteed that the sufficiently exact technical problem of phase contrast of two-way 30Hz frequency content in VOR signal。
It is an object of the invention to be achieved through the following technical solutions:
A kind of production method of VOR standard signal, including:
Produce reference phase signal and the variable-phase signal of phase contrast accurate stable；
Produce subcarrier signal；
By described reference phase signal, described subcarrier signal is carried out frequency modulation；
Produce main carrier signal；
By the reference phase signal after frequency modulation and variable-phase signal, described main carrier signal is carried out amplitude modulation, to generate VOR standard signal。
A kind of transmitter of VOR standard signal, including:
Phase contrast generation module, is used for producing reference phase signal and variable-phase signal；
Subcarrier generation module, is used for producing subcarrier signal；
FM module, for by described reference phase signal, carrying out frequency modulation to described subcarrier signal；
Main carrier generation module, is used for producing main carrier signal；
Amplitude modulation module, for by the reference phase signal after frequency modulation and variable-phase signal, carrying out amplitude modulation to described main carrier signal, to generate VOR standard signal。
The embodiment provides the production method of a kind of VOR standard signal and transmitter, by producing reference phase signal and the variable-phase signal of phase contrast accurate stable；Produce subcarrier signal；By described reference phase signal, described subcarrier signal is carried out frequency modulation；Produce main carrier signal；By the reference phase signal after frequency modulation and variable-phase signal, described main carrier signal is carried out amplitude modulation, to generate VOR standard signal。The present invention improves the accuracy of the phase contrast of reference phase signal and variable-phase signal。
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, also can obtain other accompanying drawing according to these accompanying drawings。
Fig. 1 is the flow chart of the production method of a kind of VOR standard signal of the embodiment of the present invention；
Fig. 2 is the structural representation of the transmitter of a kind of VOR standard signal of the embodiment of the present invention。
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation。
Embodiments provide the production method of a kind of VOR standard signal, such as Fig. 1, including:
Step 101, generation reference phase signal and variable-phase signal；
Wherein, the phase contrast that step 101 specifically may include that step 101-1, determines between reference phase signal and variable-phase signal；Step 101-2, according to described phase contrast, produce reference phase signal and variable-phase signal；Step 101-3, by orthogonal coherent detection update the system error, to obtain the described phase contrast of milli degree level。
Step 102, generation subcarrier signal；
Step 103, by described reference phase signal, described subcarrier signal is carried out frequency modulation；
Step 104, generation main carrier signal；
Step 105, by the reference phase signal after frequency modulation and variable-phase signal, described main carrier signal is carried out amplitude modulation, to generate VOR standard signal。
Step 105 specifically can include two ways, as follows:
Reference phase signal after frequency modulation and variable-phase signal are synthesized, to generate composite signal；By described composite signal, described main carrier signal is carried out amplitude modulation, to generate VOR standard signal；
Or,
By the reference phase signal after frequency modulation, described main carrier signal is carried out amplitude modulation, to generate the first amplitude-modulated signal；By variable-phase signal, described main carrier signal is carried out amplitude modulation, to generate the second amplitude-modulated signal；Described first amplitude-modulated signal and described second amplitude-modulated signal are synthesized, to generate VOR standard signal。
The frequency of described reference phase signal and described variable-phase signal is 30Hz, and the frequency of described subcarrier signal is 9.96KHz, and the frequency of described main carrier signal is 108.0～117.95MHz。
The embodiment provides the production method of a kind of VOR standard signal, by producing reference phase signal and variable-phase signal, produce subcarrier signal, by described reference phase signal, described subcarrier signal is carried out frequency modulation, produces main carrier signal, by the reference phase signal after frequency modulation and variable-phase signal, described main carrier signal is carried out amplitude modulation, to generate VOR standard signal。The present invention improves the accuracy of the phase contrast of reference phase signal and variable-phase signal。
The embodiment of the present invention additionally provides the transmitter of a kind of VOR standard signal, as in figure 2 it is shown, include:
Phase contrast generation module 210, is used for producing reference phase signal and variable-phase signal；
Subcarrier generation module 220, is used for producing subcarrier signal；
FM module 230, for by described reference phase signal, carrying out frequency modulation to described subcarrier signal；
Main carrier generation module 240, is used for producing main carrier signal；
Amplitude modulation module 250, for by the reference phase signal after frequency modulation and variable-phase signal, carrying out amplitude modulation to described main carrier signal, to generate VOR standard signal。
Wherein, phase contrast generation module 210, specifically may include that
Phase contrast generates unit 211, for determining the phase contrast between reference phase signal and variable-phase signal；
Signal generates unit 212, for according to described phase contrast, producing reference phase signal and variable-phase signal；
Amending unit 213, for by orthogonal coherent detection update the system error, to obtain the described phase contrast of milli degree level。
Above the present invention being described in detail, principles of the invention and embodiment are set forth by specific case used herein, and the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention；Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, all will change in specific embodiments and applications, in sum, this specification content should not be construed as limitation of the present invention。
Claims (6)
1. the production method of a VOR standard signal, it is characterised in that including:
Produce reference phase signal and the variable-phase signal of phase contrast accurate stable；
Produce subcarrier signal；
By described reference phase signal, described subcarrier signal is carried out frequency modulation；
Produce main carrier signal；
By the reference phase signal after frequency modulation and variable-phase signal, described main carrier signal is carried out amplitude modulation, to generate VOR standard signal。
2. the production method of VOR standard signal according to claim 1, it is characterised in that produce reference phase signal and the variable-phase signal of phase contrast accurate stable, including:
Determine the phase contrast between reference phase signal and variable-phase signal；
According to described phase contrast, produce reference phase signal and variable-phase signal；
By orthogonal coherent detection update the system error, to obtain the described phase contrast of milli degree level。
3. the production method of VOR standard signal according to claim 1, it is characterised in that by the reference phase signal after frequency modulation and variable-phase signal, described main carrier signal is carried out amplitude modulation, to generate VOR standard signal, including:
Reference phase signal after frequency modulation and variable-phase signal are synthesized, to generate composite signal；By described composite signal, described main carrier signal is carried out amplitude modulation, to generate VOR standard signal；
Or,
By the reference phase signal after frequency modulation, described main carrier signal is carried out amplitude modulation, to generate the first amplitude-modulated signal；By variable-phase signal, described main carrier signal is carried out amplitude modulation, to generate the second amplitude-modulated signal；Described first amplitude-modulated signal and described second amplitude-modulated signal are synthesized, to generate VOR standard signal。
4. the production method of VOR standard signal according to claim 1 and 2, it is characterized in that, the frequency of described reference phase signal and described variable-phase signal is 30Hz, and the frequency of described subcarrier signal is 9.96KHz, and the frequency of described main carrier signal is 108.0～117.95MHz。
5. the transmitter of a VOR standard signal, it is characterised in that including:
Phase contrast generation module, is used for producing reference phase signal and variable-phase signal；
Subcarrier generation module, is used for producing subcarrier signal；
FM module, for by described reference phase signal, carrying out frequency modulation to described subcarrier signal；
Main carrier generation module, is used for producing main carrier signal；
Amplitude modulation module, for by the reference phase signal after frequency modulation and variable-phase signal, carrying out amplitude modulation to described main carrier signal, to generate VOR standard signal。
6. the transmitter of VOR standard signal according to claim 5, it is characterised in that phase contrast generation module, including:
Phase contrast generates unit, for determining the phase contrast between reference phase signal and variable-phase signal；
Signal generates unit, for according to described phase contrast, producing reference phase signal and variable-phase signal；
Amending unit, for by orthogonal coherent detection update the system error, to obtain the described phase contrast of milli degree level。
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| CN201610137727.3A CN105703844B (en) | 2016-03-10 | 2016-03-10 | A kind of production method and transmitter of VOR standard signals |
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| CN201610137727.3A CN105703844B (en) | 2016-03-10 | 2016-03-10 | A kind of production method and transmitter of VOR standard signals |
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| CN105703844B CN105703844B (en) | 2018-07-17 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3763491A (en) * | 1970-07-01 | 1973-10-02 | American Standard Inc | Method and circuitry for eliminating undesired modulation of vor signals |
| US3787860A (en) * | 1971-10-20 | 1974-01-22 | Univ Southern Illinois | Airborne navigation apparatus |
| US3792473A (en) * | 1972-11-21 | 1974-02-12 | Bendix Corp | Vor receiver with adaptive filters and phase shifter for improved accuracy |
| FR2526248A1 (en) * | 1982-04-30 | 1983-11-04 | Thomson Csf | DEVICE FOR GENERATING THE 30 HZ REFERENCE SIGNAL OF A VOR CONVENTIONAL TRANSMITTER |
| CN101401006A (en) * | 2006-09-14 | 2009-04-01 | 株式会社东芝 | Dvor monitor device, and dvor monitor method |
| CN201259539Y (en) * | 2008-09-26 | 2009-06-17 | 天津七六四通信导航技术有限公司 | Complete frequency band digital monitor unit for Doppler VHF omni-directional beacon |
| CN102426426A (en) * | 2011-12-15 | 2012-04-25 | 北京航空航天大学 | Aviation navigation signal simulation system applied to flight check |
| CN105092985A (en) * | 2014-12-30 | 2015-11-25 | 北京无线电计量测试研究所 | Phase-locked amplifier based attenuation parameter measurement device |
-
2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3763491A (en) * | 1970-07-01 | 1973-10-02 | American Standard Inc | Method and circuitry for eliminating undesired modulation of vor signals |
| US3787860A (en) * | 1971-10-20 | 1974-01-22 | Univ Southern Illinois | Airborne navigation apparatus |
| US3792473A (en) * | 1972-11-21 | 1974-02-12 | Bendix Corp | Vor receiver with adaptive filters and phase shifter for improved accuracy |
| FR2526248A1 (en) * | 1982-04-30 | 1983-11-04 | Thomson Csf | DEVICE FOR GENERATING THE 30 HZ REFERENCE SIGNAL OF A VOR CONVENTIONAL TRANSMITTER |
| CN101401006A (en) * | 2006-09-14 | 2009-04-01 | 株式会社东芝 | Dvor monitor device, and dvor monitor method |
| CN201259539Y (en) * | 2008-09-26 | 2009-06-17 | 天津七六四通信导航技术有限公司 | Complete frequency band digital monitor unit for Doppler VHF omni-directional beacon |
| CN102426426A (en) * | 2011-12-15 | 2012-04-25 | 北京航空航天大学 | Aviation navigation signal simulation system applied to flight check |
| CN105092985A (en) * | 2014-12-30 | 2015-11-25 | 北京无线电计量测试研究所 | Phase-locked amplifier based attenuation parameter measurement device |
Non-Patent Citations (1)
| Title |
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| 王有跃: "基于GPS的VOR校飞方法研究", 《万方数据库》 * |
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